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<body class='typora-export' oncopy="return false" oncut="return false" onpaste="return false">
<div  id='write'  class = 'is-mac'><h1><a name='header-c5' class='md-header-anchor '></a>浮点数加法测试报告</h1><h2><a name='header-c7' class='md-header-anchor '></a>测试程序</h2><pre class="md-fences md-end-block" lang="c"> <div class="CodeMirror cm-s-inner CodeMirror-wrap"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"></div><div class="CodeMirror-hscrollbar" style="left: 0px;"><div style="height: 100%; min-height: 1px; width: 0px;"></div></div><div class="CodeMirror-vscrollbar"><div style="min-width: 1px; height: 0px;"></div></div><div class="CodeMirror-scrollbar-filler"></div><div class="CodeMirror-gutter-filler"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; min-height: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines"><div style="position: relative; outline: none;"><div class="CodeMirror-measure"><div style="width: 50px; height: 50px; overflow-x: scroll;"></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><pre class=""><span style="padding-right: 0.1px;"><span class="cm-meta">#include &lt;stdio.h&gt;</span></span></pre></div><pre class=""><span style="padding-right: 0.1px;"><span class="cm-meta">#include &lt;stdlib.h&gt;</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-def">main</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">argc</span>, <span class="cm-variable-3">char</span> <span class="cm-keyword">const</span><span class="cm-operator">*</span> <span class="cm-variable">argv</span>[])</span></pre><pre class=""><span style="padding-right: 0.1px;">{</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-comment">/**</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">* define var</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">*/</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">int</span> <span class="cm-variable">i</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">result</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">first_number</span> <span class="cm-operator">=</span> <span class="cm-number">0.1f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">second_number</span> <span class="cm-operator">=</span> <span class="cm-number">0.2f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">one</span> <span class="cm-operator">=</span> <span class="cm-number">1.0f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">zero</span> <span class="cm-operator">=</span> <span class="cm-number">0.0f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-comment">/**</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">* Test for add 0.1 for 10 times</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">*/</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">zero</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">for</span> (<span class="cm-variable">i</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">i</span> <span class="cm-operator">&lt;</span> <span class="cm-number">10</span>; <span class="cm-operator">++</span><span class="cm-variable">i</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span> <span class="cm-operator">+</span> <span class="cm-variable">first_number</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">if</span> (<span class="cm-variable">result</span> <span class="cm-operator">==</span> <span class="cm-variable">one</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.1 for 10 times == %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  } <span class="cm-keyword">else</span> <span class="cm-keyword">if</span> (<span class="cm-variable">result</span> <span class="cm-operator">&gt;</span> <span class="cm-variable">one</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.1 for 10 times &gt; %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  } <span class="cm-keyword">else</span> {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.1 for 10 times &lt; %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-comment">/**</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">* Test for add 0.2 for 5 times</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; <span class="cm-comment">*/</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">zero</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">for</span> (<span class="cm-variable">i</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">i</span> <span class="cm-operator">&lt;</span> <span class="cm-number">5</span>; <span class="cm-operator">++</span><span class="cm-variable">i</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span> <span class="cm-operator">+</span> <span class="cm-variable">second_number</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">if</span> (<span class="cm-variable">result</span> <span class="cm-operator">==</span> <span class="cm-variable">one</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.2 for 5 times == %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  } <span class="cm-keyword">else</span> <span class="cm-keyword">if</span> (<span class="cm-variable">result</span> <span class="cm-operator">&gt;</span> <span class="cm-variable">one</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.2 for 5 times &gt; %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  } <span class="cm-keyword">else</span> {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"Add 0.2 for 5 times &lt; %f\n"</span>, <span class="cm-variable">one</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">return</span> <span class="cm-variable">EXIT_SUCCESS</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; height: 30px; width: 1px; top: 0px;"></div><div class="CodeMirror-gutters" style="display: none; height: 1222px;"></div></div></div></pre><h2><a name='header-c9' class='md-header-anchor '></a>程序结果</h2><pre class='md-fences mock-cm' style='display:block;position:relative'>Add 0.1 for 10 times &gt; 1.000000
Add 0.2 for 5 times == 1.000000</pre><h2><a name='header-c11' class='md-header-anchor '></a>分析</h2><h3><a name='header-c12' class='md-header-anchor '></a>内存中浮点数的表示</h3><p>依照IEEE 754规定，浮点数应表示为如下方式</p><p><img src='http://techdocs.altium.com/sites/default/files/wiki_attachments/212877/FPUFormat.png' alt='latex_9099c97dc88fc909c00cc34b94c84fc9' /></p><p>对于32位的单精度浮点数，<strong>最高的1位是符号位s，接着的8位是指数E，剩下的23位为有效数字M</strong></p><h3><a name='header-c19' class='md-header-anchor '></a>32位单精度浮点数0.1的内存结构</h3><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h3><a name='header-c33' class='md-header-anchor '></a>32位单精度浮点数0.2的内存结构</h3><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h2><a name='header-c47' class='md-header-anchor '></a>单精度浮点数0.1连加10次的内部运作</h2><h3><a name='header-c48' class='md-header-anchor '></a>使用如下程序观察每一次加法的两个加数和结果的内存表示</h3><pre class="md-fences md-end-block" lang="c"> <div class="CodeMirror cm-s-inner CodeMirror-wrap"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"></div><div class="CodeMirror-hscrollbar" style="left: 0px;"><div style="height: 100%; min-height: 1px; width: 0px;"></div></div><div class="CodeMirror-vscrollbar"><div style="min-width: 1px; height: 0px;"></div></div><div class="CodeMirror-scrollbar-filler"></div><div class="CodeMirror-gutter-filler"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; min-height: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines"><div style="position: relative; outline: none;"><div class="CodeMirror-measure"><div style="width: 50px; height: 50px; overflow-x: scroll;"></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><pre class=""><span style="padding-right: 0.1px;"><span class="cm-meta">#include &lt;stdio.h&gt;</span></span></pre></div><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">print_add</span>(<span class="cm-variable-3">float</span> <span class="cm-variable">first</span>, <span class="cm-variable-3">float</span> <span class="cm-variable">second</span>, <span class="cm-variable-3">float</span> <span class="cm-variable">result</span>)</span></pre><pre class=""><span style="padding-right: 0.1px;">{</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"In decimal: %f + %f = %f\n"</span>, <span class="cm-variable">first</span>, <span class="cm-variable">second</span>, <span class="cm-variable">result</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"In binary: %x + %x = %x\n"</span>, <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">first</span>), <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">second</span>), <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">result</span>));</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"\n"</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;">}</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-def">main</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">argc</span>, <span class="cm-variable-3">char</span> <span class="cm-keyword">const</span><span class="cm-operator">*</span> <span class="cm-variable">argv</span>[])</span></pre><pre class=""><span style="padding-right: 0.1px;">{</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">num</span> <span class="cm-operator">=</span> <span class="cm-number">0.1f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-number">0.0f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">first</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">second</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">int</span> <span class="cm-variable">i</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">first</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">second</span> <span class="cm-operator">=</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">for</span> (<span class="cm-variable">i</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">i</span> <span class="cm-operator">&lt;</span> <span class="cm-number">10</span>; <span class="cm-operator">++</span><span class="cm-variable">i</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span> <span class="cm-operator">+</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">print_add</span>(<span class="cm-variable">first</span>, <span class="cm-variable">second</span>, <span class="cm-variable">result</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">first</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">second</span> <span class="cm-operator">=</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">return</span> <span class="cm-number">0</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; height: 30px; width: 1px; top: 0px;"></div><div class="CodeMirror-gutters" style="display: none; height: 780px;"></div></div></div></pre><p>观察结果</p><pre class='md-fences mock-cm' style='display:block;position:relative'>In decimal: 0.000000 + 0.100000 = 0.100000
In binary: 0 + 3dcccccd = 3dcccccd

In decimal: 0.100000 + 0.100000 = 0.200000
In binary: 3dcccccd + 3dcccccd = 3e4ccccd

In decimal: 0.200000 + 0.100000 = 0.300000
In binary: 3e4ccccd + 3dcccccd = 3e99999a

In decimal: 0.300000 + 0.100000 = 0.400000
In binary: 3e99999a + 3dcccccd = 3ecccccd

In decimal: 0.400000 + 0.100000 = 0.500000
In binary: 3ecccccd + 3dcccccd = 3f000000

In decimal: 0.500000 + 0.100000 = 0.600000
In binary: 3f000000 + 3dcccccd = 3f19999a

In decimal: 0.600000 + 0.100000 = 0.700000
In binary: 3f19999a + 3dcccccd = 3f333334

In decimal: 0.700000 + 0.100000 = 0.800000
In binary: 3f333334 + 3dcccccd = 3f4cccce

In decimal: 0.800000 + 0.100000 = 0.900000
In binary: 3f4cccce + 3dcccccd = 3f666668

In decimal: 0.900000 + 0.100000 = 1.000000
In binary: 3f666668 + 3dcccccd = 3f800001
</pre><h3><a name='header-c53' class='md-header-anchor '></a>浮点数加法具体运作过程</h3><h4><a name='header-c54' class='md-header-anchor '></a>第一次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>00000000</strong></td><td><strong>00000000000000000000000</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c100' class='md-header-anchor '></a>第二次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c146' class='md-header-anchor '></a>第三次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><h4><a name='header-c192' class='md-header-anchor '></a>第四次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c238' class='md-header-anchor '></a>第五次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00000000000000000000000</strong></td></tr></tbody></table><h4><a name='header-c284' class='md-header-anchor '></a>第六次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00000000000000000000000</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><h4><a name='header-c330' class='md-header-anchor '></a>第七次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>01100110011001100110100</strong></td></tr></tbody></table><h4><a name='header-c376' class='md-header-anchor '></a>第八次</h4><p>加法1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>01100110011001100110100</strong></td></tr></tbody></table><p>加法2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>10011001100110011001110</strong></td></tr></tbody></table><h4><a name='header-c422' class='md-header-anchor '></a>第九次</h4><p>加法1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>10011001100110011001110</strong></td></tr></tbody></table><p>加法2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>11001100110011001101000</strong></td></tr></tbody></table><h4><a name='header-c468' class='md-header-anchor '></a>第十次</h4><p>加法1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>11001100110011001101000</strong></td></tr></tbody></table><p>加法2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111011</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p><strong>最终结果</strong></p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111111</strong></td><td><strong>00000000000000000000001</strong></td></tr></tbody></table><h3><a name='header-c514' class='md-header-anchor '></a>加法结果</h3><p>观察该结果，其浮点数数值为</p><p><strong>1.00000011920928955078125</strong></p><p>该结果大于1</p><h2><a name='header-c521' class='md-header-anchor '></a>单精度浮点数0.2连加5次的内部运作</h2><h3><a name='header-c522' class='md-header-anchor '></a>使用如下程序观察每一次加法的两个加数和结果的内存表示</h3><pre class="md-fences md-end-block" lang="c"> <div class="CodeMirror cm-s-inner CodeMirror-wrap"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"></div><div class="CodeMirror-hscrollbar" style="left: 0px;"><div style="height: 100%; min-height: 1px; width: 0px;"></div></div><div class="CodeMirror-vscrollbar"><div style="min-width: 1px; height: 0px;"></div></div><div class="CodeMirror-scrollbar-filler"></div><div class="CodeMirror-gutter-filler"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; min-height: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines"><div style="position: relative; outline: none;"><div class="CodeMirror-measure"><div style="width: 50px; height: 50px; overflow-x: scroll;"></div></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><pre class=""><span style="padding-right: 0.1px;"><span class="cm-meta">#include &lt;stdio.h&gt;</span></span></pre></div><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">print_add</span>(<span class="cm-variable-3">float</span> <span class="cm-variable">first</span>, <span class="cm-variable-3">float</span> <span class="cm-variable">second</span>, <span class="cm-variable-3">float</span> <span class="cm-variable">result</span>)</span></pre><pre class=""><span style="padding-right: 0.1px;">{</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"In decimal: %f + %f = %f\n"</span>, <span class="cm-variable">first</span>, <span class="cm-variable">second</span>, <span class="cm-variable">result</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"In binary: %x + %x = %x\n"</span>, <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">first</span>), <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">second</span>), <span class="cm-operator">*</span>((<span class="cm-variable-3">int*</span>)<span class="cm-operator">&amp;</span><span class="cm-variable">result</span>));</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">printf</span>(<span class="cm-string">"\n"</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;">}</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-def">main</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">argc</span>, <span class="cm-variable-3">char</span> <span class="cm-keyword">const</span><span class="cm-operator">*</span> <span class="cm-variable">argv</span>[])</span></pre><pre class=""><span style="padding-right: 0.1px;">{</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">num</span> <span class="cm-operator">=</span> <span class="cm-number">0.2f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-number">0.0f</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">first</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">float</span> <span class="cm-variable">second</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable-3">int</span> <span class="cm-variable">i</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">first</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-variable">second</span> <span class="cm-operator">=</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"><span>​</span></span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">for</span> (<span class="cm-variable">i</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>; <span class="cm-variable">i</span> <span class="cm-operator">&lt;</span> <span class="cm-number">5</span>; <span class="cm-operator">++</span><span class="cm-variable">i</span>) {</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">result</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span> <span class="cm-operator">+</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">print_add</span>(<span class="cm-variable">first</span>, <span class="cm-variable">second</span>, <span class="cm-variable">result</span>);</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">first</span> <span class="cm-operator">=</span> <span class="cm-variable">result</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  <span class="cm-variable">second</span> <span class="cm-operator">=</span> <span class="cm-variable">num</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  }</span></pre><pre class=""><span style="padding-right: 0.1px;"> &nbsp;  <span class="cm-keyword">return</span> <span class="cm-number">0</span>;</span></pre><pre class=""><span style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; height: 30px; width: 1px; top: 0px;"></div><div class="CodeMirror-gutters" style="display: none; height: 780px;"></div></div></div></pre><p>观察结果</p><pre class='md-fences mock-cm' style='display:block;position:relative'>In decimal: 0.000000 + 0.200000 = 0.200000
In binary: 0 + 3e4ccccd = 3e4ccccd

In decimal: 0.200000 + 0.200000 = 0.400000
In binary: 3e4ccccd + 3e4ccccd = 3ecccccd

In decimal: 0.400000 + 0.200000 = 0.600000
In binary: 3ecccccd + 3e4ccccd = 3f19999a

In decimal: 0.600000 + 0.200000 = 0.800000
In binary: 3f19999a + 3e4ccccd = 3f4ccccd

In decimal: 0.800000 + 0.200000 = 1.000000
In binary: 3f4ccccd + 3e4ccccd = 3f800000
</pre><h3><a name='header-c527' class='md-header-anchor '></a>浮点数加法具体运作过程</h3><h4><a name='header-c528' class='md-header-anchor '></a>第一次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>00000000</strong></td><td><strong>00000000000000000000000</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c574' class='md-header-anchor '></a>第二次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c620' class='md-header-anchor '></a>第三次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111101</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><h4><a name='header-c666' class='md-header-anchor '></a>第四次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>00110011001100110011010</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>结果</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><h4><a name='header-c712' class='md-header-anchor '></a>第五次</h4><p>加数1</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111110</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p>加数2</p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111100</strong></td><td><strong>10011001100110011001101</strong></td></tr></tbody></table><p><strong>最终结果</strong></p><table><thead><tr><th><strong>Sign</strong></th><th><strong>Exponent</strong></th><th><strong>Mantissa</strong></th></tr></thead><tbody><tr><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /><img src='http://www.binaryconvert.com/bit1.png' alt='img' /></td><td><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /><img src='http://www.binaryconvert.com/bit0.png' alt='img' /></td></tr><tr><td><strong>0</strong></td><td><strong>01111111</strong></td><td><strong>00000000000000000000000</strong></td></tr></tbody></table><h3><a name='header-c758' class='md-header-anchor '></a>加法结果</h3><p>观察该结果，其浮点数数值为</p><p><strong>1.0</strong></p><p>该结果等于1</p><h2><a name='header-c781' class='md-header-anchor '></a>LICENSE</h2><pre class='md-fences mock-cm' style='display:block;position:relative'>MIT License

Copyright (c) 2017 LI GEN LING

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the &quot;Software&quot;), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.</pre><p></p></div>
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